Truly great what they did with the video there.
I have heard the song before Johnny Cash did some really good ones that make you think like that. If you liked it you might also check out some stuff by Merle Haggard, Johnny Paycheck and a lot of other country artists from the late 60s and 70s.

"[T]he people are not to be disarmed of their weapons.
They are left in full possession of them."
Zacharia Johnson (speech in the Virginia Ratifying Convention,25 June 1778)"The best we can hope for concerning the people at large is that they be properly armed." ~Alexander Hamilton